Patent US2874166A successfully refreshed from Google Patents.
US2874166A
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Fluoro-olefins and process for preparing them
Assignee: EIDP Inc
•
Filing: 1953-08-14
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Granted: 1959-02-17
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Expires: 1973-08-14
Abstract
No abstract record available.
Inventors
- 👤 Dixon Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:57
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/263; C07C21/00; C07C21/02; C07C21/18; C07C22/00; C07C22/02; C07C22/04; C07C22/08; C07C23/00; C07C23/02; C07C23/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
ORGANIC FLOURINE COMPOUNDS WHICH ARE MEMBERS OF THE CLASS CONSISTING OF COMPOUNDS HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
16 words
ORGANIC FLOURINE COMPOUNDS WHICH ARE MEMBERS OF THE CLASS CONSISTING OF COMPOUNDS HAVING THE GENERAL FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |